If you DNS server has the firewall on it use these iptables -A INPUT -p tcp -m tcp --dport 53 -j ACCEPT iptables -A INPUT -p udp -m udp --dport 53 -j ACCEPT If your forwarding ports for DNS you'll need those and then your forwarding rules. Jason > -----Original Message----- > From: antonio tuozzo [mailto:at.com@xxxxxxxxxxxxx] > Sent: Wednesday, October 20, 2004 11:59 AM > To: General Red Hat Linux discussion list > Subject: Re: IP Tables problem > > > This is true! However, normal queries are single UDP > requests. DNS system uses TCP only when data syze replies if > > 512 bytes. > On Wed, Oct 20, 2004 at 06:20:20PM +0200, Crucificator wrote: > > > > > As a matter of fact DNS uses both TCP and UDP. > > > > redhat-list mailing list > > unsubscribe > mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > > https://www.redhat.com/mailman/listinfo/redhat-list > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
